Low complexity bandwidth efficient carrier frequency offset...

Details Low complexity bandwidth efficient carrier frequency offset... Low complexity bandwidth efficient carrier frequency offset...

2009-08-28

2011-10-18

Yao, Kwang B (Department: 2473)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S330000, C370S344000, C375S260000, C375S344000

Reexamination Certificate

active

08040790

ABSTRACT:
A system and a method for estimating low complexity bandwidth efficient carrier frequency offset for orthogonal frequency division multiple access (OFDMA) and or single carrier frequency division multiple access (SC-FDMA) uplink transmissions in a communication network systems including a group of subscriber stations, a base station including carrier frequency offset unit. The method steps include transmitting a plurality of null subcarrier signals and data subcarrier signals from plurality of said subscriber stations (SS) to the base station; processing transmitted subcarrier signals at the base station by estimating carrier frequency offset (CFO) by carrier frequency offset unit; selecting the subcarrier signals based on carrier assignment scheme (CAS).

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